浅议化学工程学科未来的发展动态

本文通过对在化学工程领域的一些研究问题及研究进展进行分析，并且对超临界化学反应技术、分离技术以及传热过程等进行了分析研究，要对化学工程技术中的过程、设备、研究对象、研究方法和手段等这些研究的重点方面发生了深刻的改变，化学工程技术将更加注重多学科的融合，并以约能源、提高环境保护水平为最终目标。     

浅谈岩矿测试技术的现状与趋势

本文就岩矿测试技术的当前情况以及其发展趋势进行了一系列探讨。首先是对岩矿测试技术的意义以及特点等进行了简单的，描述，然后指出了岩矿测试技术的一些相关步骤，继而从宏观、微观并结合古代的研究对当前的岩矿测试技术进行了分析，最后总结了一下岩矿测试技术的发展趋势。     

论暖通空调的节能技术

本文对暖通空调的节能技术进行了细致的分析，主要介绍了建筑设备中暖通专业的节能技术措施，主要包括非电驱动制冷技术、蓄能技术、热泵技术及热回收技术等。     

微结构传感器的激光制造技术研究进展

微结构传感器是具有以微尺度结构作为敏感单元，能将外界物理、化学、生物信号转化为电信号的传感器，已广泛应用于智能机器人、健康监控、虚拟电子等领域。目前，微结构传感器的制造方法主要有激光制造技术、MEMS技术和3D打印技术等。激光制造技术是将高能光子束聚焦到被加工物上，使激光与物质相互作用的一种绿色加工方法，主要包括激光烧蚀、激光直写、激光诱导和激光-倒模复合加工等，具有非接触式加工、无掩膜版、可定制化制造等优势，通过优化激光加工工艺参数，可以实现不同尺寸和形状微结构的高效低成本制造。本文对微结构的类型、功能及制造技术进行了概述，同时对激光制造技术制备的微结构传感器进行了归纳分类，详细分析了生物电传感器、温度传感器以及压力传感器的制造技术及应用，最后对微结构传感器激光制造技术的发展趋势进行了总结与展望。     

声全息技术的研究现状与展望

简单地回顾了全息术的基本原理,全息术的应用范围及发展历史。对声全息技术进行了分类，并对各类声全息技术的特点进行了评述，就近场声全息技术（NAH）中常用的各类重建计算方法及适用范围、声全息数据的各类采集方法、特点及声全息成像的分辨率、各类声场全息图像的表达方法等问题的研究现状进行了详尽的分析，并重点分析了基于声压测量的近场声全息技术和基于声强测量的近场声全息技术（BAHIM）的研究现状，从而指出了这两种近场声全息技术有待进一步深入研究的问题，并对NAH及BAHIM技术发展前景进行了展望。     

房建施工中的后浇带施工技术

后浇带是房建施工中应用较多的一种技术措施，可以有效解决钢筋混凝土结构由于温度、伸缩不均等构成的有害裂缝，但由于施工技术等原因，在施工完毕后经过会出现一些问题。本文对房建施工中的后浇带施工技术进行了较为详尽的阐述，并对其施工要点进行了具有针对性的论述。     

固体绝缘技术在环网柜中的应用探讨

针对空气绝缘技术、气体绝缘等绝缘技术的优缺点进行了分析，阐述了固体绝缘技术的特点和应用前景，提出固体绝缘技术在应用中出现的问题和解决措施，并对固体绝缘环网柜的实际运行情况进行了检验测试，体现了良好的运行可靠性。     

工业自动化仪表的使用事项探讨

随我国工业自动化仪表的发展得益于计算机技术、数字信号处理技术、网络通信技术、超导技术等新技的推动，工业自动化仪表通过对获取信息进行变换、存储、传输等处理，分析其性质，将其传输给控制系统，实现对工业生产过程自动控制，工业自动化仪表常见的有分析仪表、测温仪表、记录仪表以及控制仪表等，当前工业自动化仪表趋向于智能化、虚拟化、网络化、数字化发，而且工业自动化仪表的发展与经济发展、国家政策发展息息相关，当前我国提出低碳经济和节能减排，新能源如核电、风电等对工业自动化仪表性能提出了更高的要求，但是我国工作人员缺乏新型仪表的实际操作经验，导致新型仪表的推广受到了限制，本文主要针对我国工业自动化仪表的发展现状进行了全面的分析，深入探讨了新型智能仪表的使用经验以及注意事项，期望对广大工作者有所帮助。     

仪表自动化技术在化工安全生产中的应用

化工生产过程存在易燃、易爆、有毒、有害等危险特性，风险很大。通过自动化控制技术，对液位、压力、温度等参数进行自动化技术控制，能达到自动报警、联锁、切断等功能，提高了化工生产的安全指数。本文简要介绍了自动化控制技术，并主要针对仪表自动化技术在智能化和网络化方面的应用进行阐述。     

关于计算机入侵检测技术问题的探讨

对入侵检测技术的相关问题进行了探讨，首先对机房信息安全进行基本概述，接着对入侵检测技术从基本情况及缺陷等角度进行探讨，随后论述入侵检测技术的发展前景。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.